Improvement in knitting-machines



v end of the needlecarriage.

UNITED STATES PATENT OFFICE.

JOSEPH K. KILBOURN AND EDW. E. KILBOURN, OF NORFOLK, CONN.

IMPROVEMENT IN KNlTTlNG-MACHINEVS.

Specification forming part of Letters Patent N0. 21,762, dated October 12, 1858.

To allwhom it may concern.-

Be it known that we, JOSEPH K. KILBOURN and EDWARD E. KILBoURN,of Norfolk, inthe county of Litchfield and State of Connecticut, have invented certain new and useful Improve ments in Knitting-Machines, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, in which- Figure l represents a side view and plan of a needle of the full sze,'togetherwith its slide; Fig. 2, a side view of a sinker and sinkerslide ot' full size. Fig. 3 represents a side view and rear view of a transferring-hook of the full size. Fig. 4 represents afront elevation ofthe machine of half the full dimensions. Fig. 5 represents a rear elevation ot' the same. Fig. Grepresents a plan of the machine; Fig. 7, a horizontal section of the machine at the line x of Fig. 3; Fig. 8, avertical longitudinal section ofthe machine at the line a: of Fig. 6. Fig. 9 represents an elevation ot' one ot' the ends of the machine; Fig. l0, a vertical transverse section of the machine, following the line :n :c of Fig. 5. Fig. 11 represents a view7 ot' one Fig. 12 represents a transverse section of the needlefcarriage at the line j! tof Fig. 6; and Figs. 13, 14,15,16, and 17 represent views of parts ofthe machine detached from the remainder to'render their construction and operation more clear.

Our invention has reference to that class of lmachines by means of which yarn is knit into fabrics; and the main object of our invention is to cause the various devices in the machine which operate directly upon the yarn to nar row and widen thefahric automatically, according to a previously conceived design or pattern.

Our invention consists in transferring the stitches from theneedles upon which they have been formed to other needles in a series of needles, for the purpose of narrowing the fabric and for other purposes, by means of transfer- `ring-hooks operated in such manner as to enter into the stitches by moving along the stems ofthe needles toward their points.

Our invention consists, further, in directing the operation of transferring-hooks, or their equivalents, which transfer the stitches from the needles on which they are formed to othg ers by means of a pattern-barrel, or the equivalent thereof, so that the machine, when once set to work, accomplishes the narrowing oft-he fabric automatically, according to the intended pattern or design.

The widening of the fabric in our present machine is effected in the manner described in certain Letters Patent granted to us the 16th day of February, A. D. 1859, by casting the yarn over an additional needle by the operation of -the thread'guide; and our present invention consists, further, in directing the movement of the thread-guide by means of a pattern-barrel, or the equivalent thereof, so that the machine, when once set to work, accomplishes the widening of the fabric automatically, according to the intended pattern ordesign.

In our machine the needles and sinkers are mounted in a series upon a carriage which travels alternately in opposite directions, so as to cause the slides of the needles and of the sinkers to pass in succession along the inclined portions of the grooves of certain stationary cam-bars,by which their movements in knitting are effected. When, in the operation of' such a machine, the work from narrowing contains a less number of stitches than the number of needles in the series a portion of the needles and sinkers are not acting upon the yarn, and consequently the carriage need not travel as far `as it must when all the needles are at work; and our invention consists, further, in varying the travel of the carriage in proportion to the widening and narrowing of the work.

Our invention also consists in varying the periods of time at which the pattern-barrel or its equivalent is moved in proportion to the Widening and to the narrowing of the work.

Our invention also consists in various other improvements by means of which theoperation of a knitting-machine is improved, as will more fully appear in the following description.

The several parts of our invention are embodied in the fiat-knitting loom represented in the accompanying drawings. As the machine necessarily comprises a great number` ot' parts, we have deemed it best, in order to prevent confusion, to represent the mechanism for widening and narrowing as applied to operate at one side only of the fabric, and we shall point out, in the course of the following description, the mode of applying widening and narrowing mechanism to a machine, so

' ator who tends it.

port and guide `a carriage, D, that is caused to traverse to and fro from one end of themachine to the other.- This carriage, which we shall hereinafter call the needle-carriage, from its office in carrying the needles,is moved to and'fro lalternately in opposite directions by the continuous rotation of a driving-shaft, B,

to which power is applied by the application of a belt to a belt-pulley, P, secured to this shaft. The driving-shaft is fitted with asleeve, O, Fig. 16, that is caused to turn with the shaft by means of a feather running in a corresponding groove in the shaft, and has two frictioncones, Q Q', Fig. 16, secured to it.- These friction-cones may be brought alternately into contact with either one of a corresponding pair of hollow friction-cones, Q2 Q3,that are formed in hubs that run loosely upon the drivingshaft B, by means of ashifting-lever, A', which is forked to embrace a groove formed by thev backs of the two solid cones. The shiftinglever depends from a rock-shaft, B', which is fitted with an arm, 7b, whose lower end enters a helical groove formed in a drum, P', secured to a shaft, B2, so that by rocking this shaft B2 in one direction or the other the shifting-lever A' is caused to force one or other of the solid cones into contact with its corresponding hollow cone. The hub of each hollow cone has a drum, P2 and P3, secured to it, upon which drums belts D' and D2 are wound. The belt from the drum P2 is carried to a drum, P4, secured to a shaft, B3, and made fast thereto. The belt from the drum P3 is carrie'd to a corresponding drum, P5, upon the same shaft B3, and is made fast thereto. The-belts, D', and D2 are wound in opposite directions upon the drums P2 and P3, so that when one belt, D', is being wound upon its drum P2 (by the turning of theJ hub Q3, to which it is secured by the action of its appropriate friction-cone Q') the shaft B3 is turned in the direction of the arrow upon the drum P4, Fig. 5, the other belt, D2,

being meanwhile un'wound, and when this latter belt, D2, is being wound upon the drum P3 the shaft lB3 is turned in the opposite direction to that indicated by the arrow upon the drum P4. The shaft B3, to which the drums are secured,has a cog-wheel, E', upon it, whose teeth engage with those of a rack, F', that is secured to the under side of the needle-carriage D, so that the turning of this cog-wheel shaft B3 alternately in opposite directions by the alternate action of the two bolts D' and D2 causes the needle-carriage to move to and fro from one end of the bed-frame to the other. In the movement of the carriage the belts are wound several times upon their drains, and as each new fold of the belt thus made overlaps the preceding folds the curvedstirface upon which the belt is Winding, while imparting motion to the carriage becomes progressively of larger diameter, and consequently winds up the belt more rapidly and tends to cause the carriage to progress in a corresponding manner.

ln the operation of the machine wc are describing it is desirable that the carriage shouldmprogress equably. In order therefore to compensate the irregularity that arises from the winding of the belts, thedrums P4 P3 upon the shaft B3 have eccentric barrels, as shown at Figf5, and each belt is secured to its drum in such manner that it is 'acting upon the smallest portion of the eccentric drum when it is being wound upon the bare surface of the Winding-drum, `and that as the belt is pro gressively wound upon itself it is acting upon progressively larger portions of the eccentric drum. The enlargement ot' the curved surface ofthe winding-drum is thus compensated by a corresponding enlargementin the acting surface of the eccentric drum, and the Inovements of the cog-wheel shaft B3 and of the needle-carriage, to which it imparts motion, are equalized. -v 2 From the foregoing description it appears that the movement of the shifting-lever A' to throw one or other friction-cone into opera tion e'ects the reversal of the movement of the carriage, and that the movementof the shifting-lever is effected by the action of the helical groove of the drum P' upon the rockshaft B2,.according as the rock-shaft is turned in one direction or the other. In order that the machine may be automatic, Ait is essential that the movementof the-rock-shaft B2 should be eected at the proper moment by some portion ofthe machine,and it is effected in the present instance bymeansof a strap, D3,which Y is secured-to a drum, P3, upon the rock-shatt- B2, and whose ends are made fast to two drum., P7 and P3, whose movements depend upon the movement of the cog-wheel E' that drives the carriage-rack F'. One of these drums is hung loosely uponv the shaft of the cog-,wheel E', and is connected by a sleeve with a disk, G', adjacent to the cog-Wheel E'. The cog-wheelis fitted with a driver (shown in dotted lines in Fig. 8) which comes in contact with a snug secured to the adjacent face of the disk G', just before the carriage reaches the end of its range of motion nearer the standard C. lThe drum, being thus turned by the driver, winds up the strapv D3 and moves the rock-shaft B2 in the direction indicated by the arrow applied to the drum P6 in Fig. 8. The other drum is bling loosely upon a counter-shaft, B4, which, from one of its oces in the machine,we shall hereinafter call the cam shaft.77 This camshaft is parallel to the cog-wheel shaftB3, and motion is imparted to it by means ot a cogwheel, E3, and a tra-in of beveled wheels, a' c2 c3 teeth ot' these beveled pinions engage in those of a secondary beveled wheel, c4, made fast to the cam-shaft B4,and theresultof this arrange ment is vthat the cani-shaft is driven in the same direction as the eog-wheel-shaft B3 and at the same speed, with the capacity in the machine to vary the angular position of the cam-shaft B4 with reference to the cog-wheil shaft B3 by turning the pinion-stock H upon its axis. The cam-shaft is fitted with a driver (shown in dotted lines in Fig. 8) which comes in Contact with a snug upon the face of the drum P2 as the carriage approaches the standard C of the main frame, and causes itto turn with the cam-shaft B4 to wind up the strap D3, and thus move the rock-shaft B2 in the opposite direction to the arrow in Fig. 8. In order that the strap may not interfere with parts of the rnachinewhich intervene between the camshaft B4 and the rock-shaft B2, it is conducted around a segment, P9, situated near one end ofthe machine.

The movement of the strap D3 by turning the rock-shaft B2 operates the shitting-lever A. As, however, the vmovement of the cogwheel shaft B3 stops the moment the frictionl cone in operation is disengaged,itis necessary to provide means to continue the movement of the rock-shaft B2 until the other friction-cone is, engaged. This is eii'ected in the present ma chine by means of a tumbling-bob, T', which is made fast to the rock-shaft B2, and which by its momentum carries the rock-shaft over in either direction to thefarthestlimit required to throw either friction-cone into operation.

In order to prevent the slacking ot' the belts D' D2, which impart motion from the drivingshaf't to the cog-wheel shaft by the momentum o't' the winding-drumsP2 Pduring the unwinding ot' either strap by the winding up of the other, the periphery of each hollow cone is iitted with a friction-strap, which is pressed in contact with it by a weight, W, of sucient force to cause the friction of the strap to which it is secured to overcome the momentum ot'the hollow cone and its drum.

The needle-carriage contains the needles and sinkers, which constitute two series whose `nembers alternate so that there is a needle between each two sinkers.

The needles, as shown at Fig. 1, have the ordinary hookformed head,the barb of the hook being received, when depressed, into a corresponding groove in the shank or stem. The stems ot' these needles differ from the needles hitherto used in knitting-machines in bein gconstructed with a secondary groove,a2, Fig. 1, whose office in knitting will behereinafter described. Each needle is secured to a slide having a snug, b, upon it, by means of which the slide, with its Vot' which it is moved to and fro.

The needle-carriage D is of rectangular form and is mounted upon the bed-fraaie, its lower side being fitted with V-shaped feathers, which slide in the Vshaped grooves in the top of' the main frame. Upon the upper side ot' this carriage there is ablock of metal, d, which extends its entire lengt -h and has` a series of' transverse grooves in it to receive and guide the slides E ot' the needles, for which it forms a bed. The needles project forward from this bed and pass through a corresponding series of transverse grooves in a bar, f, which extends along the front side ot the carriage and forms a uosing or series of orifices into which the needles are withdrawn to cast olf the loops, and from which they are protruded to receive yarn to form new loops. The grooves of' this nosing have at bottom a V form, so that when the needles are depressed they are caused, by the forms of the grooves, to place themselves at equal di-tances apart and to occupy always the same positions, whereby the uniform width of the stitches is secured, andthe transferring of stitches from needle to needle by the prongs of transferring-inst-ruments is insured.

A second block of metal, g, is supported at the front' side ot' the carriage by means of standards. This block has a series of grooves in it similar to those of the needlebed, and it forms a bed to receive and guide the shanks of the sinkers. The lower edge, e, of this siuker-bed overlaps the nosing from which the needles protrude, and forms a bar against the lower side of which the barbs ofthe needles are pressed, by the action ofthe support F beneath, to close them, so that when they are drawn into the orifices ot' the nosing they may pass through and cast o" the loops already formed. The needle-bed d is surmounted by a stationary needle-cam bar, G, which is supported by the standards O C of the nia-in frame of the machine, and has a cam-groove in its lower face to receive the snugs b ot' the needle-slides,and thus impart motion to the needles as the carriagc is moved from one end ot' the frame to the other.

The form of the cam-groove is shown in dotted lines at Fig. 6. lt will be perceived that thecam-groove forks into two brapches and c2, into eitherone ot' which the needle-sn ugs may be made to travel by turning a switch, g. This mode of constructing the needle cam bar has been devised in order to cause the needles to be projected forward to their farthest limit when the carriage is approaching the end ot' its travel, so as to place them in a convenient position for inspection and repair. When the machine is making a fabric of uuif'orm width the suugs of the needle-slides may be permitted to travel in the forward branch ofthe canigroovc, but when narrowingis beingefiected the snugs must be caused to travel in the rear branch of the cam-groove, so as to draw the needles into their orices and leave the loops which are to be transferred upon the transferring hooks. The switch g is controlled by a spring-lever, h', bymeaas of which it may be moved and secured in the desiredposition to open either branch of the cam -groovef The snugs ofthe sinkers are received into a camgroo've in the hinderlace of the sinker-cam bar H, which is supported in the proper position innnediatelyin front ot' the sinker-bed g by the standards of themaiu frame, so that the proper up and down movements are imparted to the Vsinkers as the carriage moves'to and fro.

The yarn or thread is fed to the series of needles by means of a tubular thread -guide which is situated in front of the sinkers, and is fitted to acarriage that slideslongitudinally upon ways secured to the front side of the sinker-cam bar H. rlhis thread y-gnitie J has the form of aflattcned tube whose upper and loweredges will readily enter thespae between the needles, and* whose thickness is such that it will readily" pass through these spaces. lts shank' is secured to a slide, B, which slides vertically in abroad dovetailed groove formed in the face of the thread-guide carriage I. The hinder side of the slide has asnug or pin projecting from it, which passes through a vertical slot in the thread -guide carriage, and is received into and operated by a cam-groove,

Y r, formed in the front side of the cam-bar H,

so that when the thread guide carriage is moved longitudinally from one end of the machine to the other the thread-guide J is alternately depressed below and raised above the level of the needles by the operation of the inclined portions of the cani-groove r upon the pin traversin g in the groove. The thread-guide carriage is moved alternately to and fro by means ot' the bumpers K and M, which 'are carried along with the needle-carriage, and which come alternatelyT inv contact with the corresponding stings, i and o,secured to the threadguide carriage. These bumpers are hun g upon a traverse-bar. N, that is supported by the standards of the needle-carriage. As the machine thus described is adapted to Widening and narrowing at one side of the fabric only, only one of the bulnpers, M, need be moved.

The other bumper, K, is made fastto the trav-l erse-rod N by a set-screw, so that when it has been properly adjusted it remains in its position. The movable bumper M is fitted with a nu., on, which is traversed by an adjusting.- screw, L, by the turning of which the bumper is moved along to ward one or the otherend of the needle-carriage, according as the screw is turnedin onedirection or theother. The pitch Y ot' this screw is equal to the distance between the centers of the adjacent needles, so that by turning it one or more revolutions the bumper is moved along one or more needles.

The shank of the adj listing-screw L is fitted with a cog-wheel, E3, whose teeth engage in those of a similarwheel, E, secured to a sleeve, S, which slides longitudinally upon a shaft, B5, and is moved to and fro with the needle-carneedles.

riage. This shaft-B5 is slotted from end to end, and the sleeve S of the cog-wheel .E4 is ttted with a pin, or with a feather, which, slidingin the slot of the shaft, forces the cog-wheel li4 to turn with the shaft, when the latter turns, in whatever positionthe needle-carriage may be at the time. The object of moving the bumper M is to vary the movement of the thread-guide carriage upon which it acts, and thus vary the position of the thread-guide with respect to the the same position with respect to the needlecarriage and thread-guidecarriage the threadguide will be caused to descend and rise by the ac'ionof its cam-groove between the same pair of needles; but if the bumper-screw L bc thus widening the work the extent of a stitch.

As the widening-screw L is turned by the operation of the slotted shaft B5 the movement` of this latter shaft at the proper time effects the widening of they fabric. This same slotted shaft B5, in this instance, also. imparts movement to the mechanism by which the narrowing-of the fabric is effected. We shall therefore proceed to describe this latter mechanism Lbefore describing the means ofvmoving the g slotted shaft B5. Y

The narrowing of the fabric in our machine is effected by transferring the selva ge-stitches from the needles on which they have been formed to needles nearer the opposite selvage of the fabric, and this operation is effected by means of transferring prongs or hooks which are-operated in such manner as to enter the stitches upon the needles from the inner side of the siukers, and while the needles are retained in their exact positions by the v-shaped grooves of the nosing in which they lie when the transferring-hooks begin to operate. These transferring-hooks are operated bya rock-shaf t,

s, that lies in a recess in the back of the sinker-4 bed g. That portion of this rock shaft which is between the standards of the needle-carriage is slotted from end to'end, and itis litted with a stock, U, to which the transferring-hooksV are secured. The stock is fitted with a feather that enters the slot of the rock-shaft, so that although it maybe moved longitudinally along this rock-shaft, it is caused to rock with itand to turn the points of the transferring-hooks outward or inward, in whatever position the stock maybe upon the shaft.

The transferring-hooks in the present instance are two'in number, although this number may be increased or diminished, as may be desired, according to the kind of work beingV So long as the bumper M remains inl made. Each hook is curved, as shown in Figs. 3 and 12, and each has a groove formed in its lower side of sufficient depth to guide the head ofthe needle into the stitch which may be upon the transferring hook. These transferringhooks, when the stock is not being moved longitudinally, are supported above the selvageneedle and the next one thereto; and when the rock shaft s is turned in one direction their points moving forward traverse the secondary grooves a2, Fig. 1,of the needles, enter and pass through the stitches upon these needles, and retain these stitches while the needles are withdrawn inward, whereby the stitches are shi ted to the transferring-hooks. The transferring hooks, with the stitches upon them, aren then moved along the carriage the space of a needle before the needles are again protruded, so that the heads of the needles, in protruding, may traverse the grooves in the lower sides of the transferring-hooks,`may enter the stitches, and may take the stitches oil' from the transferv ring-hooks; and as the needle which now enters the selvage stitch is the next one nearer the opposite selvage ot' the machine, the fabric will be narrowed the width of a stitch. In order to move the transferring-hooks longitudinally along the series ot' needles, the stock U is slotted to admit the extremity of an arm, c2, that extends from a hub, W. This hub is fitted with a nut, m', that is traversed by a screw, Lf, similar to the widening-screw L, and which for distinction we shall hereinafter call the narrowing-screw. The pitch of this narrowing-screw, like that of the widening-screw, is equal to the distance between the centers of a pair of needles, so that the turning of it a revolution carries the hub W, and by its arm the stock U, the width of a stitch. The narrowing-screw is fitted with a cog-wheel, E5, whose teeth engage with those of the same wheel E4 that drives the widening-screw L, so that these two screws are moved simultaneously by the turning ofthe slotted shaft B5, and the threadguide and transferring-hooks are caused to maintain their proper relative positions, whatever positions they may occupy in respect to any particular needles. In the machine we are now describing the rocking of the shafts to protrude and withdraw the transferring-hooks is effected by the revolution of the narrowingscrew in thefollowing manner: the end of this screw passes through one of the standards, '.l, of the needle carriage, and its protruding extremity is fitted with a snail-cam, X, the ecceutric portions t t of whose volutes, acting upon a pin which is secured to a lever, Y, and projects within their range of motion, move this lever alternately in opposite directions. The lever Y is pivoted at one end to the adjacent standard T of the carriage. Its opposite end is forked to embrace a pin, at', which is secured in an exeentric position to a hub, g3, made fast to the extremityv ofthe rock-shaft s ofthe trailsferring-hooks, so that as the lever is moved to and fro by the turning of the lsnail-cam X on the narrowing-screw the rock-shaft s is caused to rock to protrude the transferring-hooks and to withdraw them.

In the operation of the machine it is necessary that the movements of the transferringhooks longitudinally along the series of needles and their movement in and out by the action of the rock-shaft should not take place simultaneously. The pause in the longitudinal movement of the hooks while the narrowing-screw is turning to move the rock-shaft is eiected by causing the narrowing-screw to move endwise as it turns. In order to eiect this endwise movement a pair of collars, z z', Fig. 5, having inclined faces, are secured to the standards ot' the needle-carriage, and a pair of corresponding collars, z2 z3, having snugs projectin g from their faces, are secured to the narrowing-screw L. The faces of the stationary collars z z are inclined in such manner that during a portion of the revolution of the narrowing-screw it is moved endwise in one direct-ion just as fast as it would otherwise tend to screw the hub W in the opposite direction, while during the remainder of its revolution the sn ugs, passing over parts of the stationary collars which are inclined in directions the reverse of the irst, cause the screw to move endwise in the same direction as it screws the hub, while it is also screwing the hub along, so that during the latter part of the revolution of the screw the hub W, and with it the transferringhooks, is moved longitudinally by the combined movement of the endwise motion ofthe narrowing-screw and its screw action upon the hub. The inclined portions of the stationary collars z z are of unequal length, and that which furthers the longitudinal movement is the shorter, so that this movement of the transferring hooks is effected during a short angular movement of the narrowingscrew. The pause inthe rocking ot' the rocksbaft s while the transferring-hooks are moving toward the opposite selvage is effected by the shape and length ot' the acting faces of the snail-cam. As the narrowing-screw L and the wideningscrew L are both turned simultaneously by the action of the cog-wheel E4 upon the slotted shaft B5, the transferring-hooks will be carried longitudinally along the series of needles when the threadguide bumper M is being moved outward to widen the fabric. During theretrogradc movement of the transferring-hooks it is necessary that the stock U, to which they are secured, should not rock, as no stitches at this time are to be transferred. The cessation of the rocking of the shaft during the retrograde movement of the transferring-hooks is effected by pivoting a portion, e, of one of the ribs of the snail-cam to the disk thereof in such manner that in turning backward the pitt of the lever Y can pass without having any movementiinpartcd to it. The pivoted portion thus acts as a switch to direct the' movement of the pin and` lever Y, and this switch is held in place by a spring which is secured to that face of the snail'cam which is nearer the standard T of the needle-carriage.

to reenter the grooves.

In order to hold the rock-shaft s in its position while the snail-cam is not acting upon the rocking lever Y, a spring, w, is made to hear upon the rim of the hub g5 on the end of the rock-shaft s, which is made eccentric in such manner that the pressure of the spring tends to hold it stationary after it has been rocked forward and backward to its 4proper positions. Thev spring, acting upon the rim of the hub 95,

also effects another operation in the machine.' `While the pron gs of the transferring-hooks are moving longitudinally along the series of neefdles they are advanced so far forward as to permit their heels to clear the grooves of the nosing in which the needles lie.; but before vthe needles are protruded it is desirablel that the Yprongs should be in such positions that the needles, in moving forward, cannot fail to enter the stitches upon the transferring-hooks.

Aln-order to insure this oprration the prongs are rocked slightly backward, so as to cause their heels to re-enter the grooves of the nosin g before the needles are protrnded. The grooves in the lower sides of the transferring-hooks `thus form V-shaped guides above the needles corresponding with the V-shaped grooves in the nosing, and the needles being conined between the two are compelled, in protruding, to

. enter the stitches on the prongs. This rocking of the rock-shaft s to cause the heels of the pron gs' to re enter the grooves ofthe nosing is effected by the action of the spring w upon the hub g5.

manner that when the prongs are in their most' forward positions the endof the spring bears The rim of the hub is formed in such upon an inclined part ofthe ri1`n (shown in dotted lines at at, Fig. 11) and tends to rock the shaft and prongs backward,:and;the snailcam o-n the end of the narrowing-screw is of i such .form that, after the prongs are moved to direction, by acting upon the vwideniiig-screw,

changes' the position of the thread-guide, and thus widens the work, while itatthe same time, by acting upon the narrowing-screw, carries along the transferring-hooks, so that the outermost one is always over the selvage-needle and ready to remove the stitches formed there- The turning of the slotted shaft B5 in the other directiolnby acting upon the narrowingscrew, effects the transferrence of the selvagestitches toward tne opposite selvageLthus narv rowing the work, while itat the saine time, by

acting upon the widening-screw, carries along the thread-guide, so that it is always in a proper position to feed the yarn to the selvageneedle.

VIn order that the machinemay be automatic yg) to the slotted shaft B5.

in its operation, the turning of the slottedshaft B5 must be accomplishedzaccordiug to the previously conceived design, by the operation of the machine itself, and this is effected as tol- Y lows: The extremity of the slotted shaft B5 projects through thestandard C of the'main frame, and has a cog-wheel, ff, secured to it, which forms the rst of'a train vof cog-wheels, ff2f3j'4f5f5f7f5, the last one,f5, of which is made fast to a counter-shaft, B5,.that is supported in suitable bearings beneath the top of the bed frame of the machine. This countershaft has a beveled wheel,f9, secured to it, which is driven by acorresponding beveled wheel, flo, secured' to a shaft, B7. This lastmeiitioned shaft projects through the back of the bed-frame, and its projecting extremity is tted with tworatchet-wheels, R2` and R3, Figs. 6, 7, and l5,whose teeth .incline Vin opposite directions. Each of th ese ratchet-wheels has a ratchet lever and paw] appertaining to it, by which it is moved to turn tthe `ratchet-t wheel shaft to impart motion (through the beveled wheels f9 f1", the counter-shaft B, and the train of cog-wheelsfffgftfff7 As the turning of the ratchet-shaft B7 in one direction or the other, by the operation of one or other of the pawls upon its appropriate ratchet-Wheel, yeffects a corresponding turningof the slotted shaft B5 in one direction or the other, and as the direction in which the slotted shaft B5 is turned effects either the widening or narrowing of the fabric, it follows that when the one ratchet-wheel is acted upon by its appropriate pawl the fabric will be widened, and when the other is'acted upon the fabric will be narrowed. In the present machine the outer n ratchetwheel, R5, is the narrowing-wheel, and the inner one, R3, the widening-wheel. The pawl S3 of the latter is pivoted to a ratchet-lever, L3, which is hung upon the ratchet-shaft B7, and whose tail is fitted with a pin, d5, Figs. 15 and 7, which lies upon a cam, G3, secured to the cani-shaft B4, so that as the cam is turned the ratchet-lever is caused to vibrate and the pawl S3 is caused to move to--and fro. The pawl S2 of the narrowing ratchet-wheel R2 is pivoted to a similar vratchet-lever, L2, whose tail is titte'd with a pin that bears upon a cam, O2 C4, also secured to the cam-shaft B4, so that as this shaft turns this pawl is also caused to move to and fro, as the movement ot' the threadguide to widen is effected while it is traveling in its lowest position, and as this movement may be a simple continuous movement, the

cam C3, which operates the widening-pawl, is solidly secured to the shaft B4. The movement of the transferring-hooks, on the contrary, to narrow the fabric has to be accomplished partly while the needles are protruded to their farthest limit, partly While they arewithdrawn inward, and partly after they have been protruded again to take the stitches off from the transferring-hooks. rlhe movement of the narrowing-screw is therefore intermittent; it must also be effected partly while the carriage is traveling in one direction and partly while it is traveling in the other direction. rI he extent of movement of the narrowing screw during the two movements of the carriage must also be unequal in the present machine. In order to produce these intermittent and unequal movements, the cam, as shown particularly in Fig. 15, is made up of two parts, C2 and C4, one part, G2, being fast to the shaft B4 and always traveling with it, while the other part, C4, is moved by a pin working in a slot in the camdisk, so that this portion ofthe cam does not begin to move until the shaft has traveled a certain distance in one` direction or the other and the end of the slot has been brought into contact with the pin. The loose portion G4 of the cam is maintainedin the position in which it is placed during the time the shaft is not impartingv motion to it by means ofa springbralie, fw, (seen in Fig. 10,) which being secured to the inside of the standards h4, which support the cam-shaft B4, bears against the cam. lith a compound cam ot this description the most eccentric portion G2 of this cam leaves the second part, C4, as the camis turned inthe direction of the arrow in Fig. 15, and thus passes outside of the pin of the ratchetlever L2, leaving the latter to be moved wholly by the second part, C, of the cam. When, however, the cam is turned in the direction of the arrow in Fig. 5 the second part of the cam' remains stationary until the most eccentric part C2 has closed up the space between the two, after which the two move on simultaneously formingonecontinuous curved rim,which passes beneath the pin of the ratchet-lever, and thus causes it to be moved by the most eccentric part of the eam. The pawls S2 and S3 are not permitted to act upon their respective ratchet-wheels, except when widening or narrowing is to be effected. Each pawl is therefore held out of gear with the teeth of its ratchet-wheel by means of a loose collar of sut'- ticient diameter, upon whose periphery the pawl rides. The collar Gr2 ot' the narrowing-pawl S2 is tted to turn loosely upon the ratchet-wheel shaft B7, and is connected by a rod, r2. with the end ot' an arm, H2, that projects from a rock-shaft, B8. This rock-shaft is fitted with a second arm, l2, that rides upon a pattern-barrel, J2, which is perforated to receive pattern-pins ft2 ft2. One portion of the rim ot' the ratchet-collar G2 is notched sutiiciently to let the pawl fall into the teeth ofthe ratchetwheel when the notch ofthe collar is beneath the pawl, and as the collar is connected by the rod r2 with the arm H2 of the rock-shaft the pin of the pattern-barrel, operating upon the other arm, I2, of the rock-shaft, effects the turning of the colla' thereby permitting the pawl to drop into the ratchet-wheel and move it, and thus direct the narrowing ot' the fabric. The collar Grs of the widening-pawl S3 is similar in all respects to thatof the narrowing-pawl. Itis connected by a rod, r3, with an arm, H3, that projects froin a` loose sleeve, K3, on the rock-shaft B8, and this sleeve is fitted with a second arm,

I3, that rides over another portion of the pattern-barrel J2, which is` also perforated to receive pattern-pins, by whose operation the action of the widening-pawl upon its ratchetwheel is directed.

In the present machine we have found it convenient to use. a sinelc patteri'i-barrel J2, Figs. 4, 7, 10, 13, and 14, for both widening and narrowing, and this barrel is turned the space of a pattern-pin at each alternate movement of the carriage by means of a cam, U5, which is secured to the cam shat't. B4 and operates upon a ratchet-lever L5. This leveris furnished with a pawl, S5, which operates upon the teeth of a ratchet-wheel, R5. that is connected with the pattern-barrelJZ. As the pattern-barrel is thus moved the space of a pattern-pin at each alternate movement ot' the needle carriage, there must be as many pinholes in it for each pawl as there are to be double stitches in the length of the fabric to be widened and narrowed, and as the large number of pattern-holes thus required would require a pattern-barrel of large diameter,

which would beineonvenient in some machines,

we have arranged the series ot' pattern-holes in two helical lines, winding around the barrel from one of its ends toward the other; and in order to cause all these holes in succession to pass beneath the arms upon which they areto act, an endwise movement is imparted to the pattern-barrel simultaneously with its rotation. In order to effect this endwise movement the pattern-barrel is hung loosely upon a stationary screw-shaft, B9, and a tooth, t3, is secured to the hub of the pattern-barrel to engage in the thread of the screw, so that as the barrel is turned the screw-thread, acting upon the tooth t3, pushes the barrel end wise. The ratchet-wheel R5 is hung,r loosely upon the shank of the screw B9, and in order that it may` turn the barrel without interfering with the endwise movement thereof it is connected u ith the barrel by a bayonet-clutch, whose arms a3 a3 extend through corresponding holes in the hub ofthe barrel, which thus 'slides along the arms ofthe clutch, but is forced to turn with them.

When a machine of this description with a long series of needles and sinlrers is woiking upon narrow work it is expedient that no more motion should be imparted to the carriage than is necessary to carry the needles and sinkers that are forming stitches past the ,inclined parts of their respective earn-grooves. der to save the wear and tear and the time that would be lost by imparting an unnecessary amount of movement to the cairiage, we have constructed our machine in such manner that the extent of' movement of the carriage is varied in proportion to thebreadth of the fabric being formed at the time, the range of the motion of the carriagey thus increasing as the work is widened and decreasiiu,r as the work is narrowed. It is also expedient that the |-at tern-barrel J2 should be turned at one particular time in reference to the movement of the carriage, and it is essential that the apparatus In or-r for widening and narrowing the fabric should be. made to operate when the selvage-needle, whichever it may be, has been brought by the movement of the needle-carriage to the same part of the cam-groove, as then each needle, in the process of widening or narrowing, becomes for the time beingthe selvage-needle. The cams must be made to operate sooner or-later upon the ratchet-levers as the work grows wider or narrower. All these variations are effected in the machine we are describing by varying the angular relation of the cam-shaft B4 to the cogwheel shaft B3 by changing the position ot' the beveled-pinion stock H', for it is evident that it' this stock be turned on its axis to vary the position ot' its axles ot' its pinions the angular position of thesecondary beveled wheel c4 to the primary beveled wheel c' will be changed.

In order to change the position of the pinionstoel; H in proportion to the widening and narrowing, a series of screw-teeth, et, are cut upon its rim, and these teeth engage in the thread of a screw, jt, formed upon the counter-shaft BG ofthe widening and narrowing mechanism, so that in proportion as the counter-shaftis turned (by thc action of the pawls upon the ratchetwheel) in one direction or the other, to widen or to narrow the work, so is the stock adjusted to vary the angular relation of the cam-shaft B4 to the cog-wheel shaft B3, and thus vary the times at which the acting surfaces of the cams come in contact with and operate their respective ratchet-levers to commence the movement ofthe widening and narrowing mechanism. As the movement of the rock-shaft B2 to change the shifting-lever Af and reverse the movement ot' the carriage when it is approaching the end ot' the machine at which `widening and narrowing are effected vdepends upon the time at which the driver on the cam-shaft B4 comes in contact with the snug of the drum P8,

the above-mentioned change in the angular re-l lation of the cam-shaft with respect to the cogwheel sha-tt causes the driver to operate the drum and its strap sooner or later, and thus causes the movement of thc carriage to be reversed when it has approached more or less near to the standard C. As the cam C5, that operates the ratchet-lever of the pattern-drum, is secured to the cam-shaft B4 and moves with it, the relation between `the times of the movement of the cams and of the pattern-barrel remains the same, while the movement of the pattern-barrel in relation to that of thc cog- 1 wheel E2 varies with the widening and narrowing, and with the variation in the movement of the ne 'die-carriage.

.in the operation of the machine we are describing it is necessary that the sinkers should be out of the way of the transferring-hooks when the latter remove the stitches from the needles, and during the time they are carrying the stitches along and transferiing them again to the needles.. 1n order to remove the sinkers for this purpose, and at the same time that they may be in their proper positionsto operate during the feeding of yarn and the forma- ,of the carriage.

tionof stitches, the cam-groove of the sinkercam bar is constructed with adouble' grade, so that the sinker-snugs arc traveling in the upper grade, gG, and the lower extremity ofthe sinkers are above the bar c and out of the way of the transferring-hooks while narrowing is being effected. On the other hand, the sinkersnugs are traveling in the lower grade, 97, dur- -ing the feeding of the yarn.

. When amachine in which the needles are alternately protruded and drawn back through the stitches is in operation the protrusion of the needles tends to cause them tocarry along with them the stitches through which they move by the friction of the stems of the needles upon the yarn. This tendency is injurious in its effects, as it prevents the stitches from being close up against the nosing at the time new stitches are being formed, and thus tends to render the work uneven. In order to obviate this defect we construct the cam-groove of the needle-cam bar with a protnberance, i5,- by the operation of which the needles are caused to protrude to a greater extent than is necessary in the formation of stitches, and that as the'needlesnugs pass this protuberance the needles are drawn back sufficiently to draw the stitches lying upon the needles in close contact with the nosing before new stitches are formed. f

In our specification appertaining to our patent ot the 16th day of February, 1858, We have described the needles as pressed upward against the bar e to close their barbs by means of movable support whosey upper edges are wholly on theinner side ofthe sinkers. When such movable supports are used in connection with automatic widening and narrowing mechanism the mechanism that operates them should be combined in such manner with the cam-shaft B4, or other variable portion of the machine, that the movement of the supports varies with the widening and narrowing of the fabric.

In the machine we are now describing we have deemed it expedient to employ stationary under supports; and in order that they may not interfere with the operation of the needles,

and sinlrers we construct each support of two parts, one ot' which, k", is on the inner side of the sin-kers and effects the raising ofthe needles to close their barbs, While the other part, 705, of the support is on `the outer side ot' the sinkers and supports the needles during the feeding of the yyarn and the descent ofthe sinkers to form the loops. By the employment 0f supports of this construction we are enabled to dispense with their movement, while at the lsame time aitight selvagey is insured, as the yarn, being within the ridge of the support, is not drawn over it.-an operation which tends lto elongate the stitches.

The fabric, as fast as it is formed, is drawn beneath the needle-bed on` the carriage by the operation of a pair of take-up rollers, M M2, Figs. .5, 6,10, 11, and 12situated at the back The lower .one ,.M2, of these rollers has a ratchet-wheel secured to one of its 21,162 Y u i 9 extremities, which is turned a tooth at a time to take up the work by means of a ratchet-lever, L6, having a pawl, S, secured to it, which engages with the ratchet-teeth. ,The ratchetlever Li is drawn back so thatits pawl may engage with a new tooth by means of va spring.

`It is moved forward to impart motion lo thc take-up roller at each passage of the needlecarriage by means of a double-inclined plane, Nfwhich is secured to the main frame of the machine. Thetake-up roller is prevented from retrograding while the pawl is passing to a new tooth of the ratchet-wheel by means ot' a .spring-pawl, S7, which is secured to the needlecarriage D, and which engages with the teeth ofthe same ratchet-wheel. lThe upper take-up roller is pressed'toward the lower, so as to nip the fabric between the two by connecting its boxes with the carriage-frame by means of springs m4,- and in order to prevent the slipping of the fabric between the rollers, without the employmentofan injurious amountof pressure, we have covered thellower roller with an elastic Inaterial-vulcanized india-rubber, for

vexample-in whose surface the stitches of the fabric slightly indent themselves.

An eyelet, W3, is secured tothe front side of the bed-frame of the machine to guide the yarn, which is previously` wound upon a suitable bobbin or tube in such manner as to deliver freely. From this eyelet the yarn is conducted to the thread-guide and passes through it, after which it is-applied to the needles.

When the machine is put to work the carriage to descend in succession between the needles and carry down folds of yarn, thus forming loops upon the needles. As the sinkers descend the continued progression of the carriage carries the needle-slides along the in clined portion of their cam-groove and causes `the needles to be drawn into the orifices in the nosing. As vthis operation is taking place while the needles are riding over the highest portion of the under support they'are pressed up by its action against the bar e of the sinke'r-bed d. The pressure thus produced closes the barbs of the needles, so that as they are vdrawn into the orices they enter and pass through the series of loops of yarn previously formed, and drawing the new folds or loops with them through this previous series cast off the latter.A The withdrawal of the needles into the orifices of the nosing takes place simultaneously with the ascent of the sinkers bythe action of the groove of their cam-bar, so that the folds of yarn formed -b'y the latter arerendered up to the needles as they enter the orifices. When, in the progression of the carriage, the selvage-needle has passed the thread-guide the bumper M, striking the corresponding snug, it, on the thread-guide carriage, causes it to move with the needle-earriage, so that no more yarn is fed by the move: ment of the latter past'the former. While the two carriages are moving together the threadguide is caused to descend by the action of its cam-'groove and to rise again as the needlecarriage approaches the extremity ot' its stroke, and when the needle-carriage comes to rest the thread-guide is at the inner end ofthe series of needles, ready to' feed out yarn when the carriage again begins to move toward the end ofthe machine from which it first started.

In forming goods of varying width-which is the kind of work for which this machine is specially adapted-the automatic widening and narrowing mechanisms are broughtinto operation. ln this case the work is commenced upon as many needles as it is to be stitches in breadth,vand the thread-guide and tra nsferring-'hooks are set (by turning the slotted shaft B5 by hand) so that'the threadguide and the outermost transferring-hook are in the proper positions to operate in connection with the outermost needle in operation, which becomes the selvage-needle for the time being. The pattern-barrel J2 is then run back byhand on its screw-shaft, the pawl S5 ot' its ratchetwheel having been rst thrown out of gear, and as many pattern pins are inserted in their proper holes as there are to be changes in the' width of the fabric.

It will be remembered that'widening and narrowing may take place at one side of the fabric at each alternate. line of stitches. 1f, therefore, widening is to take place at the tenth line of stitchesfa pattern-pin must be applied to the fifth hole in the series ofholes which pass beneath the widening-collar arm I, and in the same manneras many pins are to be inserted in their proper holes as there are to be changes in the width of the fabric by widening. If the fabric is to be narrowed as well as widened, pattern-pins are to be inserted in the series of holes in the pattern-barrel which pass beneath the narrowing-collar arm I2, a pin being inserted for each row of stitches at which a change is to be made by narrowing.

Atheir stitches upon the transferring-hooks.

When the sinkers, by the continued progres- .A

sion of the carriage, are raised out of the way ,When the machine is in operation the turning of the lfront sides of the sinkers.

' render expedient.

of the transferring hooks or prongs the lat' ter, with the stitches upon them, are carried along by the action of the cam upon the ratchetwheel until they are above the needles to which the stitches are to be transferred, and are drawn back until their heels re-enter the grooves of the nosing. Then as the carriage returns t0- ward the center of the machine the heads of transferring-hooks by the continued action of the cam draws back the -trai'asferring-hooks,`

leaving the stitches upon the needles to which they have thus been transferred. As we have before stated, the widening mechanism begins t0 move by the action of its appropriate cam .after the thread-guide has descended, and the movement is complete before it reascends.

In knitting-machines constructed previous to our invention it has been customary to transfer stitches by hand by means .of a fork or ticlrler',77 as it is technically called, whose points are entered by the hand of the attendant into the stitches onv the needles from the In effecting this operation, even by hand, difficulty is experienced, from the fact that the parts of the needles which extend beyond the sinkers areneither supported rmly nor held in exact positions laterally, nor is their anyarrangement for guiding the points of the transferringinstruments into the stitches. The last difficulty is obviated in our machine by the secondary grooves in the needles, by which the points of .the transferring-instrnment are guided along their stems into the stitches, and thel first two defects are obviated in our machine by causing the transferring-instrument to enter the `:stitches from the hinder sides of the sinkers,

their points thus traversing the secondary grooves of the needles, while the latter are firmly supported and held rigidly in their proper positions laterally by the V-grooves of the nosing in which the ncedles'lie at the time.

It will be evident to the skillful mechanical engineer that our machine may be modified to a great extent without affecting the principle of our invention. and we contemplate to niodify the construction and arrangement of machines which embody it as circumstances may Thus, for example, we have described the widening and narrowing mechanism as applied to one end only of the series of needles, but we have adapted the same mechanism to both ends of the series of needles. In this case a duplicate pattern-barrel and mechanism to operate the same, with the ratchet-shaft and their appurtenances, and a a train of gearing, are applied to each end of bed frame of the machine, and the train of gearing at the right-hand'end of the bed-frame is caused to operate a secondslotted shaft parallel with the slotted shaft B5, which, in the .present machine, is in connection with the train ofgearing at theleft-hand endof the bed-frame. This secondslotted shaft is malle to operate a.

duplicate set of wideningand narrowing screws,

the widening screw operating the bumper K and the narrowing-screw operating a duplicate set of transferring-hooks and their mechanism. A convenient. way of arra ngin g these duplicate widening and narrowing screws and the duplicate rock-shaft of the transferring-hooks is to arrange them in lines with those of thefirst set .and to extend them from a'bracket at the center of the carriage, across the slides of the series ofneedles with which they are to actin concertftoward the right-hand end of the bedframe. Each set of widening-and narrowing mechanism will thus act in concert with lhalf of the whole series of needles contained in the carriage. As the two slotted shafts must extend the entire length of the bed-frame, they vcannot be-arranged in linewith each other,

but must extend side by side. In this case motion is readily communicated from the cogwheel of the slotted shaft that is farther from its widening and narrowingscrew to the cogwheels of these series, through the intervention of an intermediate cog-wheel, which is arranged to turn freely upon the nearer slotted shaft, and whose teeth engage at one side with those of the cog-wheels upon the screws, and at the opposite side with the teeth of the cogwheel upon the second slotted shaft. In some cases it may be deemed desirablev to cause the widening and narrowing mechanisms appertaining to the needles at one end of the oarriage to act in concert with a portion of the needles of the opposite widening and narrow- Y ing mechanisms. In this case the duplicate screws and rock-shafts cannot beplaced in line,

but must overlap each other, and the means number of pattern-holes in o ne bel-t for each` arm moved by them.- A pattern-barrel may be employed for widening alone, anda separate one for narrowing alone, ora pattern-chain may be employed to direct the widening and narrowing mechanisms, or a Jacquard mechanism may be employed for the same purpose. In constructing the needles the secondary grooves in their stems may extend entirely through lthe stems, so as to take the form of a slot, or this groove maybe made to connect with the hinder end of the groove in which the barb is reccivedso as to form one continuous groove.

' Our invention is applicable to the manufacture of fancy goods- 21s, for example, openwork stockings and other knitted goods in 1 the stitches. In such cases the transferringhooks are setat the commencement of the knitting above those needles from which the stitches are first to be transferred, and pins are inserted in the pattern-barrel in the proper holes to effect the transference at the proper row of stitches.

The present machine is adapted only to the vformation of patterns by transferring stitches laterally in one direction; but it is evident that by imparting suitable movements to the narrowing-screw, and to the rock-shaft which carries the transferring-hooks,transference may be accomplished in both directions. The transferring mechanism may also, if desired, be adapted to the transferring of stitches laterally the space of several needles at once instead of one needle at a time. Moreover, the various parts of our invention may be used simultaneously in one machine, or parts of it may be applied separately to machines where it may be found expedient to employ them.

Having thus described the various parts of our improvement and the manner of embodying the same in a Working machine, what We claim as our invention, and desire to secure by Letters Patent, is-l l. The transferring ofstitches, in a knittingmachine, from the needles on which they havev been formed to other needles by means of transferring-hooks, or their equivalents, which take the stitches from the needles, move along to other needles, and deliver the stitches to these other needles, operating automatically, substantially as herein set forth.

2. Arranging transferring-hooks with reference to the needles in such manner that they may enter the stitches upon the needles by moving a long the stems ofthe needles toward theirheads, substantially as herein set forth.

3. Directing the operation of transferringhooks, or their equivalents, for transferring stitches by means ot' a pattern-barrel, or its equivalent, operating substantially as herein set forth. y

4E. Combining the mechanism that actuates transferring-prongs with the mechanism that moves the needles of a knitting-machine in such manner that the prongs enter the'stitches upon the needles at times when the latter are supported both vertically and laterally, substantially as herein set forth.

5. Combining a nosing having V-shaped grooves with transferring-prongs having corresponding grooves, the grooves of the nosing and prongs acting in concert to confine the needles and direct their heads into the stitches on the transferring-prongs. i

6. Controlling the operation ofthe mechanism by means of which the relation of the thread-guide to the needles is changed, so that yarn is supplied to more or less needles by means of a pattern-barrel, or its equivalent, operating substantially as herein set forth.

7. Varying the extent of travel of the nee- (lle-carriage in proportion to the number of needles at Work b v means of mechanism operating automatically, substantially as herein set forth.

8. Varying the periods of time at which the transferring mechanism begins to operate in proportion to the number of needles at Work by means of mechanism operating automati-I cally, substantially as herein set forth.

9. Combining thewidening mechanism with the mechanism that actuates the needle-carriage in such manner that the. period of time at which the former operates is varied in 'proportion to the number ot' needles at Work.

10. Combining the mechanism that actnates the pattern-barrel, or its equivalent, with the mechanism that actuates the needle-carriage in such mannerthatthe period of time at which the former is moved is varied in proportion to the number of needles at work.

y ll. Combining the Widening mechanism and the narrowing mechanism together, when 'both are used in the same machine, in such mannerthat the movement ot' the 011e to do its Work 'is attended by a corresponding movement of the other, so that the thread-guide and transferring-hook, or theirequi'valen ts, are both in the proper position to operate in connection with the selvage-needle.

l2.` Raising the sinkers out of the way of the prongs of the transferringinstrument, substantially as herein set forth, so that the latter may move along the series of needles Without obstruetion from the sinlters, substantially as herein set forth.

13. Obtaining a pause in the endwise movement of a nut moved by a screw by causing the screw to move endwise While it is turning in the nut, substantially as herein set'forth.

14. The arrangement ofthe pattern-holes of a pattern-barrel in a helical line, so that they may be brought in succession beneath the device upon which the pattern-pins operate by a screw or its equivalent. Y

15. Operating the transferring-instrumcnt, substantially as herein set forth, in such manner that its movement is effected partly While the carriage is traveling in one direction and partly while it is traveling in the opposite direction.

1G. Combining with a travelingseries ofneedles and a rigid bar above them stationary under supports, ov'er which theneedles ride, so

that their barbs may be closed by pressurev against the stationary bar above them.'

- l JOSEPH K. KILBOURN.

EDWARD E. KILBOURN. Witnesses as to the signature of Joseph K. Kilbourn J oHN C. WEST, N. L. JOHNSON. Witnesses as to the signature of Edward E. Kilbourn A. G. PETTIBONE, JOHN H. WELCH. 

